430 THE BIRDS OF MONGOLIA ETC. 



when disturbed in bushes it always attempts to escape by running. 

 Shooting these bird is extremely difficult. 



In Kan-su we only once saw them in spring, but never in summer. 



According to the statements of the natives, the nest is constructed of 

 grass, on the ground, under thick bushes. The number of eggs forming a 

 clutch is unknown to me. The female commences laying early ; and on the 

 9th of May I received from a native sportsman a set of four already incubated 

 eggs, and another lot of three fresh ones was brought to me by the same 

 man. The eggs are yellowish-grey or of a dirty grey colour, marked with 

 brown spots, which are thickest on the smaller end ; large diameter l"'9-2"'3^ 

 small diameter 1'^'48— 1''*53. 



We found this bird only in the Kan-su mountains, where it finds its 

 northern limit ; and only two females were obtained by us. 



Measurements— length 19'', width 25", wing 9"'5, tail 5"-8, gape l"-22, 

 tarsus 2", middle toe 1"' 47- 



207. Tetrastes sewerzowi, n. sp. Piabchic Severzowa. 



Supra olivaceo-grisea, subtus albida, ubique fasciis transrersis nigris signata ; pileo subcristato^ 

 ferrugineo, nigro maculate ; remigibus fuscis^ fulvo limbatis ; cauda nigra, striis transversis 

 albis notata ; maris gula nigra, albo circumcincta, feminse vero fulva, fusco maculata. 



Measurements : — 



Lengtb. Widtb, Wing, Tail. Tarsus, 



in. in. in. in. in. in. in. 



s. 



. . 



15 20 



7 



5-2-5-47 



1-32-1-53 



2. 



• • 



15 20 



7 



51 



Billj from front 



r37-l-43 







Middle toe. 



Hind toe. 



angle of nostril. 



Gape. 







in. 



in. 



in. 



in. 





6. 



. . 1-3 



0-35 



0-45 



0-88 





s. 



. . 113 



0-35 



0-43 



0-83 



